that's a great question, and I'm so glad you reached out. While I can't answer it from personal experience, I hope some of our community members with experiences with therapists who specialize in autoimmune diseases/chronic pain/invisible disease can chime in and share their experiences with you.
I will say, several years ago when my child was diagnosed with an autoimmune condition (Celiac), we found a therapist who specialized in treating kids who have chronic illness and disease, so I know those types of therapists are out there. And I can definitely see how having someone who specializes in understanding what it means to live with chronic diseases would have an additional benefit to therapists who don't. Although, that doesn't mean that one couldn't benefit from a therapist who doesn't specialize.
In any case, I'm sorry I couldn't be more helpful, but hopefully some others can chime in here for you. And, if you're looking for someone in your area, your doctor might be someone you could ask for a recommendation for a therapist.
I hope that you can get some helpful feedback here! -- Warmly, Christine (Team Member)